1. Orthostatic tremor;Heilman;Arch Neurol,1984
2. Primary orthostatic tremor: further observations in six cases;Britton;J Neurol,1992
3. New clinical sign for orthostatic tremor;Brown;Lancet,1995
4. Primary orthostatic tremor;Pradalier;Rev Med Interne,2002
5. Quality of life in patients with orthostatic tremor;Gerschlager;J Neurol,2003